Ventilating window mechanism



I Jun 7, 1938.

- Filed April e, 1956 J. H. ROETHEL VENTILATING WINDOW MECHANISMINVENTOR,

Li/717 JV foei/76K A TTORNEYS .rs'sheets-sheet 1 June 7, 1938.

J. H. ROETHEI,

VENTILATING WINDOW MECHANISM Filed April 6, 1936 5 Sheets-Sheet 2INVENTOR. Jodi??? H @Oef/262 ww/Wil@ l y L4 ATTORNEYS June 7, 1938. J.H. ROETHEL 2,120,115

VENTILATING WINDOW MECHANISM Filed April 6, 1936 3 Sheets-Sheet 3 Jah;/f HQMZ.

v m' Y x Patented June 7, 1938 PATENT ori-lois VENTILATING John H.Roethel,` Detroit, Mich., assigner to Antomobile Ventilation,Inc.,Dct'ro`it, Mich., a corporation of Michigan Application April 6,1936, Serial No. 73,0 50

17 Claims. (Cl. 296-44) This invention relates to Ventilating windowsfor vehicle bodies and more particularly to window Ventilation in doorsof automobile bodies. An object of the invention is to provide animproved, relatively simple and economical mechanism for raising andlowering the window glass in the body or door and for providing aventilating slot at the forward edge of the glass when the glass isfully raised, and also for sliding the glass horizontally in its planeinto -and out of position to close said Ventilating slot. The presentapplication is a continuation in part of .my co-pending application`Serial No. 735,768 iiled July 18, 1934. y

In accordance with the present embodiment of the invention it isdesirable to raise the glass vertically into Ventilating position in thewindow opening and thence shift it forwardly or horlzontally into fullyclosed position. Such a vconstruction has the important advantage ofinsuring the tight closing oi the window when the regulator has beenoperated to the limit of its travel in one direction, thus preventingthe danger of accidentally leaving the window partly openat its top, asa consequence of the regulator mechanism over-running in the use kofstructures in which the glass is iirst elevated into fully closedposition and then shifted rearwardly to Ventilating position. i

Where it isldesirabie to use the present structure, in which the windowis first shifted vertically into Ventilating position, in a vehicle doorhinged at its forward edge, diiiiculty has been experienced in causingthe rear edge of the glass to pass the lock mechanism during itsVertical travel except where an undesirably wide rear door pillar isprovided.

The foregoing disadvantages are overcome by the present inventionwhereby means is provided for shifting or displacing the glasshorizontally during its vertical travel so as to pass or clear any latchconstruction, thus permitting a deep channel or glass runway at theupper rear edge of the glass, without, however, necessitating anyincrease in the width or thickness of the rear door pillar.

channel carried thereby; and one in which the operating cam is soconstructed and arranged as to shiftlthe glass longitudinally of thevehicle when elevated into vand out of Ventilating position and topositively control the initial downward movement of the glass to insureits proper positioning withrelation to the guide channels or runways forthe upright edges of the glass.

Av further object ofthe invention is to provide the upright edges ofthelglass with parallel angularly disposed bearing portions or surfacesextending in planes corresponding to the planes of the guide channels orrunways located in the window well.

lAi'urther object of the invention is to provide an improved structureof the above character having relatively few parts and one which isrelatively cheap to manufacture.

Other objects and advantages of this invention will appearin thefollowing Ydescription and appended claims, when considered inconnection Vwith the accompanying drawings forming a part of thisspecification, wherein like reference characters designate correspondingparts in the several views.

In thedrawings:

Fig. 1 is a fragmentary side elevation illustrating a front door of anautomobile body embodying the present invention.

Fig. 2 is an enlarged fragmentary view, partly in section, illustratingthe Yposition oi' the operating mechanism when the glass is inVentilating position.

3 is a vertical section, on an enlarged scale, taken substantiallythrough lines 3-3 of Fig. 1, looking in the direction of the arrows.

Fig. 4 is a detailed section taken substantially alongthe line #-4 ofFig. 3, looking in the direction oi' the arrows.

Fig. 5 is'a detail horizontal section taken substantiallyalongkthe'lineB-S oi' Fig. 4, in the directionofthe arrows.

Fig. 6 is' a detail upright section takensubstantially along the vlineC--l of Fig. 4, in the direction of the arrows;

Fig. 'I is an enlarged fragmentary detail taken substantially along theline 1-101' Fig. 2, looking in the direction of the arrows.

Fig. 8 *isV a View similar to Fig. 1, showing a modied form of thepresent invention with the position from which it starts its initialdownward travel.

Before explaining in detail the present invention it is to be understoodthat the invention is not limited in its application to the details ofconstruction and arrangement of parts illustrated `n the accompanyingdrawings, since the invencion is capable of other embodiments and ofbeing practiced or carried out in various ways. Also it is to beunderstood that the phraseology or terminology employed herein is forthe purpose of description and not of limitation, and it is not intendedto limit the invention claimed herein beyond the requirements of theprior art.

In Figs. 1 to 7 inclusive of the drawings there is illustrated, by wayof example, an automobile front door having window glass mounted thereinand adapted to be elevated by a regulator mechanism into position withinthe window opening of the door to provide a Ventilating slot between theforward edge of the glass and the adjacent door pillar'. The regulatormechanism is thus operative to move the window glass into its uppermost.vertical position while maintaining the glass at the same time inVentilating position. This mechanism is also operative to shift theglass forwardly or horizontally inits plane to close the to preventinterference withl the latch mechanism, the present invention, Vamongother features, provides means for shifting the window glasshorizontally in its plane at substantially an vintermediate pointbetween its upper and lower positions, so as to clear or avoid the latchmechanism` during its vertical movement and thus enable the rear edge ofthe window to overlie the latch mechanism when the glass is in its topventilating position.

As best shown in Figs. 1 and 2 of the drawings, the door comprises afront pillar- I0 and a rear pillar yIl connected at their upper ends bythe usual header I2. The front and rear pillars together with the headerdefine a window opening which is adapted to be closed by means of aglass panel I3. Mounted in the front pillar vIll is a felted glasschannel member I4 adapted to receive the forward edge of the glass whenfully closed, as shown in full lines, Fig. l. The channel I4 extendsupwardly and rearwardly at I5 within the header I2 so as to confine theupper edge of the glass panel when closed. The rear pillar II isconstructed so as to provide a relatively deep glass channel or runwayI6l to receive the rear edge of the glass when the latter is inVentilating position, as shown in dotted lines, Fig. 1. The channel I6is of suflcient depth to conne the rear edge of the glass when it isshifted to its forward linut to close the Ventilating slot.

It will be understood that in the present vinstance the front pillar IIIof the door is hinged to the front body pillar so that the door islatched, when closed, at its rear edge. A latch or locking mechanism forthe door may comprise a transverse rotatable shaft I1 extending throughthe pillar as shown in Fig. 7, this shaft being turned by means of ahandle I8 to retract the latch bolt I1a. It will be seen that the shaftI1 underlies the glass channel I6 and as a result it is not possible toshift the glass in a straight Vertical line into and out of closedposition. In the present construction the deep glass runway or channelI6 terminates at the point I9 above the shaft I1 and then narrows andslopes inwardly and downwardly at an angle as shown at Isa to the pointI9b. Thence the runway or channel extends downward in a verticaldirection within the door pillar II, inwardly or forwardly of the shaftI1, providing a relatively shallow channel extension 20. The frontpillar I0 is provided with an auxiliary glass runway or felted channel2i located below the window sill 50 and effective, in cooperation withthe shallow channel 20, to guide the window glass during the lower partof its travel.

The window regulator mechanism for raising and lowering the glass andfor shifting it horizontally into and out of Ventilating position may beof any suitablev construction. In the present instance it comprises amounting plate 22 secured by a plurality of screws 23 or other suitablemeans to the inside of the door well. 'I'he plate 22 carries a pair ofintermeshing gears 2lv and 25 which .are journalled on the plate bymeans of pivots 26 and 21 respectively. Secured to the pivot 26 is aswinging arm 28 and secured to the pivot 21 is a swinging arm 29, thesearms being swung in opposite directions upon rotation of the gears.Secured to the outer end of each of the arms 28 and 29 is a stud orbutton-like device 30 having a shank riveted at 30a to the end of thearm. Along the lower edge of the glass there is fastened a feltedchannel 3l. A plate or plates 3Ia are spot welded to one face of thechannel 3| (see Fig. 3)` and have depending walls forwardly flanged at32 along their lower edges to provide, with the lower edge of thechannel 3l, a runway or runways 33 for the studs 30. Each runway, asshown at 34 in Fig. 3, has a constricted neck forming upper and lowertapered faces engaging the tapered sides of the stud 30, and the members3| and 32 which together form the glass retaining member, have outwardlyflared bearing surfaces 35, engaged by conical spring pressed washers36. From this construction it will be seen that when the arms 28 and 23are swung relatively to each other the studs 30 will slide horizontallyin the runways or camways 33 and thus raise or lower the window glass.

Secured to the inner face of the plate 3Ia, by welding or in any othersuitable manner, is a block or member 31 into which is threaded a screwor bolt 31a carrying or supporting a roller 38. In the present instancethe arm 28 has on its forward side an integral cam portion or extension39 provided with a cam slot 48. The open lower end of the slot l0 lsared outwardly at 40a and is embossed so as to receive or permit theroller 38 to enter the slot at a predetermined time during the operationof the mechanism. The upper or closed end of the cam slot 40 has anoffset portion or extension 40h.

The parts are assembled when the glass I3 is in its upper closedposition. The stud 30 carried by arm 28 is inserted horizontally intothe end of the guideway formed in the plate 3Ia, while at the same timethe stud 30 carried by arm 29 is inserted vertically into the guidewayor groove formed in the other plate 3Ia through a cut out or notchedportion 3Ib in the plate. The parts are then moved into their respectivepositions, as shown in Fig. 1, whereupon the screw or bolt 31a carryingthe roller 38 is inserted through the cam slot 40 and screwed into theblock 31 to maintain the parts in assembled relation.

As best shown in Figs. 1 and 2, the window is counterbalanced by meansof clock-like springs 4|, one end of each of the springs being anchoredto a pivot 26 and 21, their opposite ends being secured to struck-uplugs or members 42.

'I'he operation of the mechanism is as follows: When the window is inits fully closed position, the operating arms 28 and 29 are insubstantially vertical positions as seen in Fig. l. When it is desiredto lower the window, the operating handle 43, carrying on its shaft apinion 44 which meshes with the gear 24, is turned in a clockwisedirection. This causes the arms to swing outwardly in oppositedirections, and engagement of the forward edge of the offset slot 40bwith roller 38 will result in sliding the window glass horizontally intothe deep channel i6 to the full line position of Fig. 2, producing theforward ventilating slot. Further operation of the regulator in the samedirection will cause the stud or roller 38 to travel through the camslot 40. This slot is so formed as to progressively force the studforwardly during its downward vertical travel, the stud thereby movingon an oblique line indicated at in Fig. 2. Thus, the outward anddownward swinging movement of arms 28 and 28 produces a compoundmovement of the window, the inclined line 60 indicating the resultant ofthe vertical travel induced by studs 30a and the horlzontal travelinduced by roller 38 travelling in cam slot 40.

When the roller 38 nears the lower end of the cam slot the window glasswill have been shifted downwardly out of the deep channel I6 to itsdotted line position in Fig. 2, the forward edge of the glass engagingthe channel 2| and the rear edge being in line with the channel .20.

The roller 38 does not travel out of the lower end of the cam slot 40until preferably the glass has been shifted downwardly a slightdistancepast the latch handle shaft I1 so that the opposite edges of the glassare rmly guided and supported within the channels or glass runways 20and 2l. From this point the roller 38 will move downwardly along thevertical line 6| in accordance with the vertical travel of the glass.

When the glass panel is shifted from its lowered position to its raisedposition, by the counter-clockwise rotation of the operating handle 43,the reverse action takes place. The roller 38 enters the flared end 40aof the cam slot and is gradually shifted sidewise or horizontally duringits upward vertical movement along the imaginary line 60. When theroller has traveled the full length of the main cam slot 40, the glasspanel has attained the upper limit of its vertical movement and is inposition to provide the ventilating slot at its forward edge. Furtherrotation in the operating handle 43 in the same direction causes theroller to ride into the cam slot extension 40h, and by cooperation ofthe rear edge thereof with the roller the glass will be shiftedhoriontally and forwardly in its plane to close the ventilating slot.

From the foregoing it will be seen that I have provided an improvedregulator mechanism in which the movement of the regulator arms effectsthe horizontal movement of the window into and out of ventilatingposition and the vertical up and down movement of the glass panel, andduring such vertical movement also effects a horizontal shifting of theglass to avoid the door handle mechanism. Thus, I have provided anefficient mechanism in which the shifting of the glass panel in severaldirections is effected by the regulator arms themselves, and one whichis of simple construction capable of being manufactured at low cost.

Referring now particularly to Figs. 8 and 9, there is shown in thesegures a somewh'at modifled structure embodying the present invention.The door comprises a front pillar 10 and a rear pillar 1| connected'attheir upper ends by the usual header 12. 'I'he front and rear pillarstogether with the header define a window openingV which is adapted to beclosed by means of a glass panel 13. The front pillar 10 contains afelted glass channel member 14 adapted to receive the forward edge ofthe glass when fully closed, as shown in full lines, Fig. 8. The channel14 eX- tends upwardly and rearwardly at 15 within the header 12 so as toconfine the upper edge of the glass panel when closed. The rear pillar1l is constructed so as to provide a relatively deep channel or runway16 .having a felt lining 11 to receive the rear edge of the glass whenthe latter is in ventilating position, as shown in broken lines, Fig. 8.The rear channel 16 is of sufficient depth to confine the rear edge ofthe glass when it is shifted to its forward limit (full lines. Fig. 8)to close the ventilating slot or opening X located at the forwardupright edge of the glass.

It will be understood that in the present instance the front pillar ofthe door 10 is hinged to the front body pillar (not shown) so that thedoor is latched, when closed, at its rear edge. A latch or lockingmechanism for the door comprises a. transverse rotatable shaft 18extending through the pillar 1I and being adapted to be turned by meansof a handle (not shown) to retract a latch bolt (riot shown).

In the present embodiment, the felted channel 16 terminates at the point19. A separate and cooperating runway or channel 80 is located Withinthe window well and extends downwardly and forwardly from a pointadjacent the lower edge 19 of channel 18 in an angular direction withrelation to the channel 16 and to the rear face of the pillar 1l. Thechannels 16 and 80 may be secured in position within the door pillar inany suitable manner, there being shown, merely by way of illustration, abracket 8l located at the junction of the cooperating channels forsupporting them. The front pillar 10 is provided with an auxiliary glassrunway or felted channel 82 located within the well below the windowsill 68 and effective, in cooperation with the relatively shallowchannel 14. to guide the window glass' during its upward and vdownwardtravel, in an angular direction, that is, at an angle to the vertical.The channel 82 extends downwardly and forwardly in a plane parallel tothe plane of the rear angular runway 80. By providing the parallelangular guide channels 80 and 82, the glass 13 clears the lock shaft 18during its up and down travel within the door well.

As seen in Fig. 8, in position A the glass panel 13 is fully closed andin position B the glass is in its ventilating position providing a slotor opening X. It will be noted that to reach position B, the glass hastravelled downwardly a slight distance during its rearward movementlongituditudinally of the vehicle until its rear lower edge orbearingportion 13a engages the upper portion of the angular guideway orchannel 80. The lower forward edge or bearing portion 18h of the glass.in position B, is about to enter the angular channel or glass runway 82.The movement of the glass from position A to position B is positivelycontrolled by a cam forming a part of the regulator mechanism so thatthe glass is guided into position B from which position its lowerforward edge can enter the inclined guide channel 02 without any furtheraid from the cam, as explained hereinafter. In position C, Fig. 9, therectilinear bearing portions 13a and 13b of the glass panel 10 are inengagement with the channels or guideways and 82. out of engagement withthe glass and no longer effects or controls the movement of the glasspanel. Further downward movement thereof is effected by the arm or armsofthe regulator mechanism. During such movement, the glass is guided inan angular path by the channels or runways 00 and 82.

The lower rear edge 13a of the glass panel and the lower forward edge13b thereof are correspondingly tapered and extend in parallel angularplanes which correspond to the angular parallel planes in which theguides 80 and 02 extend. The lower edge of the glass panel 'Il isprovided with a felted metal channel or rail member 00 having, as shown,spaced depending plates 00 containing grooves or runways 01 for thereception of studs or rollers carried by the regulator arms, asdescribed below. The metal channel or rail 00 carries a dependingbracket 00 located intermediate the inner ends of the plates 00. Thebracket 00 is provided with a stud or roller 00.

In the present instance the regulator mechanism for operating the glasscomprises a mounting plate carrying intermeshing gears 0| and 02operated by a pinion 90 which is driven by a crank or handle (notshown). The gear 0| carries a regulator arm 00 having a pivotalconnection at with the mounting plate. The gear 02 carries a regulatorarm 00 having a pivotal connection at 91 to the mounting plate 00. I'hearm 94 carries adjacent its outer end a stud or roller '90 and the arm90 carries a similar stud or roller 90, these studs or rollers beingadapted to travel in the grooves or runways 01.

The regulator arm 00 carries a projecting member or cam |00 which may besecured to the arm in any suitable manner, as by rivets |0|. The memberor cam comprises a body portion |02 and a depending projecting nnger ornose portion |00. A cam slot |00 is located between the portions |02 and|00. The finger |00 has a cam edge or surface |00 which is adapted toengage the stud or roller 00 when the arm 00 is swung upwardly towardit, or if two arms are employed, when both arms 00 and 00 swing upwardlytoward one another from the positions in which they are shown in llig.9. The outer end of the cam edge |00 engages the stud or roller 80 andrides over it, this movement Vcausing the roller to enter the caxn slot|00 and to be engaged by the cam surface |00 of the cam body portion|02. Further upward and inward movement of the cam |00 causes the camsurface |00 to ride over the roller and shift it into the closed end ofthe cam slot. As the roller travels along the cam surface |00 the glasspanel I0 is shifted upwardly from its broken line position B of Fig. 8and forwardly longitudinally of the vehicle into its full line positionA. 'I'hus ther cam surface |00 serves to shift the roller 00 into thecam slot and the cam surface |00 on the body portion of the cam servesto shift the roller further into the cam slot and at the same time movethe window upwardly and then forwardly into closed or nonventilatingposition. The rcam and cooperating roller together provide positivemeans for holding the glass and guiding it during its move- In thisposition the cam is parallel tapered portions or bearing surfaces 13a iand 10b of the glass are in engagement. In other words, after the cam|00 has moved the glass from itsfully closed position A into position B,Fig. B, further outward and downward movement of the regulator arms 90and 96 shifts the glass downwardly, this downward travel of the glassbeing in an angular or inclined path due to the angularity of the guidechannels and the cooperation of said channels with the tapered bearingportions or surfaces of the glass panel. The various parts describedoperate in substantially the reverse order when the glass is elevatedfrom its lowered position within the well to its fully closed position Aof Fig. 8.

From the foregoing it will be seen that I have provided a structure inwhich the glass travels upwardly and downwardly in an angular path toclear the latch or lock mechanism for the door and in which the edges ofthe glass are positively guided or directed into position withininclined or angularly disposed guide channels arranged in parallelismwhich serve to guide the glass throughout the major part of its up anddown travel in an angular direction.

I claim:

l. In an automobile body having a window opening and a window glassmounted therein for successive vertical and horizontal movements intheplane of the glass, regulator mechanism connected to the glass forshifting said glass vertically -into elevated position while maintaininga Ventilating slot at one upright edge thereof, said mechanismincluding. a swinging arm connected to the lower edge of the glass forraising and lowering the same, said arm having a cam portion at itsforward side provided with a cam slot, and a device carried by the loweredge of said `glass and engageable with said slot for shifting the glasshorizontally during the vertical travel of the glass.

2. A regulator mechanism for a window glassy mounted in a vehicle doorwindow opening for successive vertical and horizontal movements in itsplane, comprising a pair of swinging arms connected to the lower edge ofthe glass for raising and lowering the same. one of said arms having atits forward side an integral cam provided with a cam slot, and a rolleron the lower edge of said glass between said arms and engageablel withsaid cam slot for shifting the glass horizontally in opposite directionsduring the vertical travel of the glass in opposite directions.

3. A regulator mechanism for a window glass mounted in a vehicle doorwindow opening for successive vertical and horizontal movements in itsplane, comprising a pair of swinging arms connected to the lower edge ofthe glass for raising and lowering the same, one of said arms having cammeans cooperating with a device on the window glass for shifting thelatter forwardly during the downward travel of the glass and rearwardlyduring the upward travel thereof.

4. A regulator mechanism for a window glass mounted in a vehicle doorwindow opening for successive vertical and horizontal movements in itsplane, comprising a pair of swinging arms connected to the lower edge ofthe glass ior raising and lowering the same, one of said arms having aslotted cam cooperating with a device on the window glass forlongitudinally shifting the glass during its vertical travel.

5. In a vehicle body having a window opening and a window glass mountedtherein for successive vertical and horizontal movements in the plane ofthe glass, a regulator including a swinging arm connected to the lowercdgevof the glass for raising and lowering the same, said arm having acam provided with a slot having an offset portion and the glass having adevice travelling in the cam slot and engaging said offset portion forsliding the glass in its plane into and out of position to provide aVentilating slot at one edge of the glass, said cam. also shifting theglass longitudinally during the vertical travel thereof.

6. In a vehicle body having a window opening and a window glass mountedtherein for successive vertical and horizontal movements in the plane ofthe glass, a regulator including a swinging arm connected to the loweredge of the glass for raising and lowering the same, said arm having acam provided with a slot having an extension and the glass having adevice travelling in the cam slot and engageable with said extension forsliding the glass in its plane into and out of position to provide aVentilating slot at one edge oi the glass, said cam also shifting theglass longitudinally during the vertical travel thereof, and said cambeing formed in anextension of the arm at the forward side of the latterwhen the glass is elevated.

'7. In a vehicle body having a window opening and a window glass mountedtherein for successive vertical and horizontal movements in the plane ofthe glass, a regulator including a swinging arm connected to the loweredge of the glass for raising and lowering the same, said arm having anextension provided with a curved cam slot terminating at one upper endin an offset portion, and a device on the lower edge of the glassadapted to engage in said curved slot to shift the glass longitudinallyduring its vertical travel and also adapted to engage in said offsetportion to shift the glass longitudinally in its plane into and out ofposition to provide a Ventilating slot at one edge of the glass.

8. In a vehicle body having a window opening and a window glass mountedtherein for Successive vertical and horizontal movements in the plane ofthe glass, front and rear oppositely swinging regulator arms connectedto the glass for raising and lowering the same, a stud on the lower edgeof the glass, and a cam extension on said rear arm positionedintermediate the arms when the glass is raised for longitudinallyshifting the glass during its vertical travel.

9. In a vehicle body having a window opening and a window glass mountedtherein for successive vertical and horizontal movements in the plane oithe glass, front and rear oppositely swinging regulator arms connectedto the glass for raising and lowering the same, a stud on the lower edgeof the glass, and a cam extension on said rear arm positionedintermediate the arms when the glass is raised for longitudinallyshifting the glass during its vertical travel, said extension alsohaving means cooperating with the stud for shifting the glasslongitudinally in its plane when in elevated position.

10. In a vehicle body having a window opening and a window glass mountedtherein for successive vertical and horizontal movements in the plane ofthe glass, front and rear oppositely swinging regulator armsconnected tothe glass for raising and lowering the same, a stud on the lower edge ofthe glass, and a cam extension on said rear arm positioned intermediatethe arms when the glass is raised for longitudinally shifting the glassin opposite directions during its vertical travel in oppositedirections.

11. A regulator mechanism for a window glass mounted in a vehicle doorwindow opening for successive vertical and horizontal movements in itsplane, comprising a pair of swinging arms connecd to the lower edge ofthe glass for Vraising and lowering the same, one of said arms having aslotted cam cooperating with a device on the window glass forlongitudinally shifting the glass in opposite directions during itsvertical travel in opposite directions, and said cam slot having anoffset portion for shifting the glass in its plane when in elevatedposition.

12. Ina vehicle body having a window opening and a window glass mountedtherein for successive vertical and horizontal movements in the plane ofthe glass, a regulator including a swinging arm having a device at itsouter end slidable in a longitudinal guideway at the lower horizontaledge of the window, a stud carried at the lower edge of the Window inline with said guideway, and a cam carried by said arm and cooperablewith the stud for shifting the glass longitudinally in its plane duringits vertical travel.

13. In a vehicle body havingA a window opening and a window glassmounted therein for successive vertical and horizontal movements in theplane of the glass, a regulator including a swinging arm having a deviceat its outer end slidable in a longitudinal guideway at the lowerhorizontal edge of the window, a stud carried at the lower edge of thewindow in line with said guideway, and a cam carried by said arm andcooperable with the stud for shifting the glass longitudinally in itsplane in a forward direction during the lowering of the glass and in arearward direction during the raising of the glass.

14. In a regulator oi the Ventilating type comprising two arms, eachmounted to rotate and each having a free end slidably interlocked to anedge of a window whereby rotation of the arms in opposite directionswill raise or lower the window, one of the arms having, in an offsetportion, a slot arranged to receive a pin secured to the window, theslot being so shaped that rotation of the arm from one terminal positionwill cause the slot edges to move the pin horizontally, then move thepin in a reverse horizontal direction, and then permit the pin to leavethe slot, a bridge or strip at the end of the slot connecting the edgesof the slot and offset so as to pass by a part in the plane of oneportion of the arm and at the same time to permit the aforementioned pinsecured to the window to pass out of the end of the slot.

15. In a regulator having two arms mounted to rotate and having the freeends of said arms slidably interlocked to an edge of a window so thatrotation of the arms ,lowers or raises the window, a slot in one of thearms in a portion thereof considerably out of plane with the hub portionof the arm, these portions being separated by a bend, a third portionconnecting the first two at the end of the slot and lying in a planebetween the rst mentioned portions so that said third portion may pass,without striking, parts in the plane of aforesaid hub portion and sothat said third portion may also passby without striking a pin securedto the window and arranged to be received in the slot.

16. In a regulator adapted to raise and lower a Window by the rotationof a pair of xed center arms, an arm of said pair comprising portions inthree planes, the first portion being the hub portion, lying at thecenter of rotation, the second portion being the outer portion andhaving a slot adapted to receive a pin secured to the Window for thepurpose of causing horizontal movement of the window, and the thirdportion being a strip connecting the first two portions at the end ofthe slot and lying in a plane between said rst two portions.

17. In a regulator adapted to raise and lower a window by the rotationof a pair of fixed center arms, an arm of said pair comprising portionsin three planes, the first portion being the hub portion, lying at thecenter of rotation, the second portion being the outer portion andhaving a slot adapted to receive a pin secured to the window for thepurpose of causing horizontal movement of the window, and the thirdportion being a strip connecting the first two portions at the end ofthe slot and lying in a plane between said tirst two portions, thepurpose of such interpianar situation of said third portion being topermit, on one side, passage of parts in the plane of the first, or hub,portion, and, on the secured to the window.

JOHN H. ROE'I'HEL.

